Performance of an HTS generator field coil under system fault conditions

Kiruba Sivasubramaniam, Xianrui Huang, E. T. Laskaris, T. Zhang, J. W. Bray, J. M. Forgarty, Rebecca A. Nold

Research output: Contribution to journalArticlepeer-review


High-temperature superconducting (HTS) coils are generally stable against transient thermal disturbances. Protection against spontaneous quenches is not a main design issue for an HTS coil. However, HTS coils used in many electric devices such as motors, generators, transformers, and current limiters will operate under over-current fault conditions, which may result in a coil quench and thermal runaway. Those electric devices should be able to ride through some grid fault conditions and remain functional. This requires a certain over-current capability of the HTS coils. This paper discusses the over-current requirements from grid faults and the thermal transient responses of a BSCCO coil. It presents the analysis results of the coil subjected to over-current pulses at different operating conditions. The study also investigates the thermal runaway current and its relationship with the over-current pulse.

Original languageEnglish (US)
Pages (from-to)1971-1975
Number of pages5
JournalIEEE Transactions on Applied Superconductivity
Issue number4
StatePublished - Dec 2006
Externally publishedYes


  • High-temperature superconductors (HTS)
  • Numerical modeling
  • Superconducting generators

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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